A groundbreaking new study offers hope to millions of people living with knee pain: adjusting the angle of your foot while walking might be just as effective as pain medication—without any of the drug side effects.
Led by researchers at the University of Utah, New York University, and Stanford University, this first-of-its-kind trial showed that a slight tweak to your stride can ease knee pain, slow down joint damage, and potentially delay major surgery.
The Problem: Knee Wear and Tear
Nearly 1 in 4 adults over 40 suffers from knee osteoarthritis. This condition gradually wears down the cartilage that cushions your joints.
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No Cure: Cartilage cannot grow back.
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Current Options: Most people are forced to rely on pain pills for decades until their knee deteriorates enough to require a total joint replacement.
The most common form of knee osteoarthritis affects the inside (medial side) of the knee, which carries most of your body weight when you walk.
The Solution: “Gait Retraining”
Scientists have long known that changing how your foot lands can change how weight is distributed across your knee joint. However, earlier studies failed because they tried a “one-size-fits-all” approach—giving everyone the exact same walking advice.
In this new study, published in The Lancet Rheumatology, researchers took a personalized approach:
Customized Adjustments: Participants walked on special motion-capture treadmills to test different foot angles. Researchers calculated whether turning the toes inward or outward by 5° or 10° best reduced pressure on each individual’s knee.
The Placebo Test: To prove the results weren’t just in the patients’ heads, half of the participants were given a real foot adjustment, while the other half were secretly taught to just walk as they normally would (the control group).
Smart Training: Over six weeks, patients trained on treadmills using wearable devices on their shins that vibrated whenever their foot angle slipped out of position. After training, they were asked to practice their new walk for 20 minutes a day until it became second nature.
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The Results: Real Relief & Less Damage
After one year, the researchers compared self-reported pain levels and high-tech MRI scans between the two groups. The results were remarkable:
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Pain Relief Equal to Drugs: The reduction in knee pain reported by the retraining group fell right between the effects of over-the-counter pain relievers (like ibuprofen) and strong prescription opioids.
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Slower Cartilage Damage: MRI scans revealed that participants who adjusted their stride actually showed slower cartilage breakdown compared to the control group.
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Long-Term Habit: Participants easily maintained their new walking style over the year-long trial, adopting it as a permanent habit.
“I don’t have to take a drug or wear a device… it’s just a part of my body now that will be with me for the rest of my days.” — Study Participant.
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What’s Next?
While the results are exciting, you shouldn’t try guessing your own foot angle just yet. Turning your foot the wrong way without specialized measurements could actually make knee pain worse.
Right now, determining the correct foot angle requires expensive lab equipment and motion-capture cameras. The research team is working on streamlining the process so physical therapists can easily prescribe and train patients using simple tools or wearable tech during everyday walks.
For younger and middle-aged adults facing decades of joint pain, this personalized walking adjustment could bridge the gap between early diagnosis and eventual surgery—keeping people active, pain-free, and off medication.